That’s really odd. Do you have a smart plug around the house? Or a safe way to check the outlet’s voltage that you are using? Just seems super odd that 2 machines, potentially made months apart have the same fault.
I’m not sure what a 5 or 6% shortage will do to the printer (if anything), but it would be good to know that the issue isn’t a local issue disguised as a printer fault.
Ok. BTW they are lead screws (not ball screws) on these printers.
Mine are black too when I clean them after a few months when the printer asks me for it, even though I use SuperLube silicone grease with PTFE⁽¹⁾ which is translucent white out of the tube.
I don’t know why it becomes black (oxidization under heat and captured microparticles, I guess). Do you guys also get black grease on lead screws?
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¹ There are in fact two variants of this. I use SuperLube 21030, whereas SuperLube 92003 (which is heat resistant) should be better and is the one recommended by Bambu Lab. They also recommend BX-300/F(DF) Series high temperature grease with fluorine and Lucas Oil 10533 White Lithium Grease.
@WisestMoose how’s your ambient temp? If it’s cold, try manually turning off the chamber exhaust after starting a job. Some people were having over cooling issues in cold rooms when that top vent opens and pulls cold air over the print.
In all honesty, I am not impressed with the print quality of my H2D either. I have 3 X1C’s and a P1S that all print better than my H2D. I don’t really have the time to go down the rabbit hole troubleshooting it either, which pretty much means it does nothing. A very big $2400 paper wieght… I am not happy about the purchase at this point. When I do try to print with it, it moves and shakes a whole lot more than my X1C’s, which is to be exprected, but yeah, it dances, lol.